3D 几何画板使用教程作者：欧阳耀斌（修订：唐家军）目录§1 工具整体介绍...........................................................................................................................................2§1.1 前言.......................................................................2§1.2 安装工具的方法.............................................................3§1.3 工具原理...................................................................3§2 基本工具...................................................................................................................................................5§2.1 建立坐标系.................................................................5§2.2 三棱锥和三棱柱.............................................................7§2.3 长方体.....................................................................9§2.4 正交视图定点..............................................................10§2.5 xyz 坐标定点................................................................11§2.6 点的匹配...................................................................11§2.7 线段上定点................................................................12§2.8 中点......................................................................12§2.9 定比分点..................................................................12§2.10 点在正交视图投影.........................................................13§2.11 公垂线...................................................................13§2.12 平行线...................................................................14§2.13 平面的单位法向量.........................................................14§2.14 匹配点的技巧.............................................................14§2.15 线面交点 面面交线........................................................15§2.16 猎取点的坐标.............................................................15§2.17 距离工具..............................
